morton poole



No. 79,683. ,PATENTED JULY 7, 1868.

' f J. M. POOLE.

MACHINE FOR TURNING CYLINDERS.

Jay-a1.

nu: NORRIS PETERS co, WASHINGTON, v. c

iigiv'ron'ron-rootn, on W-nimnerefn; DELAWARE, AssIe-nou' r0 HIMSELF,

- WILLIAM r ron'rnn, Ann rues-s.- roots, er'sh' imes;

' imeReue-n' ea eres "resume eyelets.

a et c eetti nrom hg mo'r' etieiraentuo. ue,;ee'e.,aatea;it1y=1, rese. l

1T6: all 607mm it may concern:

Be it known that-I, J. Mon-rote Poem, of-

Wilniington in the cuuhty-of lilewfiastle and" sewer Delaw'are haveinvented anew and lnlprovedfmaehine 'forlurning or GrindingObjects-Cylindrical and I def hereby declare.

.thattthecfollot'yin is a full, ele'ar andex'aet description thei e'oi,'aebonipanying drawings making part of this specification,iu'whieh-Figure 1 is an eleva ferenee being had to the tio'n of'one side of'th ose perigeehe machine which are nece sary 'illustratemyint'ention, Fig. 2:is a plan'view of Fig.1, showing an object in: the act of be ingrendered eylindrieah Fig.3"is. a-traneverse section through the machine,tal'renl in a'vertical plane, indicated by red line-a? a: in. Fig; 1

;---"Si1ni1arletters of reference indicate cox're spending parts in theseveral figures; This invention relatesto anew and usefuliniprovemenuwhieh is designed to overcome certain difiiculties hithertoexperienced'in ma chinery for turning or grinding "objects ey lin-Theg'reatest dif fieulty in' thisoperation has arisen from the fact-thatit is impracticable to make a machine Whieh' will always admit of -;-thework-being 'adjusted'in'itso as to be perfectly'true with-respect toother partsof'such machine; for the several. parts composing themachine-could be'madefto fworkperfectl5 true at first; itnis. .obuiousthat they: would soon-losetheir truism inconsequence of the natural wear.of one partmovin'g upon an? "130 overcome this difliculty, the nature Imy invention consists in applying two or more grinding or turning tools,or a suitable an end-a stop, which are arranged opposite-each other, oneach side of the axis of the object} to be rendered cylindrical, upon asaddle or support, which is free to move trans'versely'to' the axis'ofsaid object, and still maintain a umformor a given distance between saidtools,

ortool. and stop; said saddle or support also being free to movelongitudinally or in a iii: rectron; with the axis of said object, aswill be hereinafter explained,

a To enable others skilled in the art to unilerstruetion and operation.

. The'horizontal bed A of the machine. m

mutin invention, r lwm describe its tot-f be constructed of any requiredlength and" width; and should be substantially, supported upon a;'frame'or stand somewhatgaiteri the. manner of constructing the frameandbe ci' of aturniug-lathe Upon; this horizontal bed A a slide-rest, B;is supported and guided by the tenons' on said rest fitting intogroovesu a" formed in side veliwations of the bed, as shown in Fig. 3.Thisrest B lies transirersely across the bed, and may be moved. back andforth in. a direction with the length thereof by means of aleader-screw, O,'turnedby' hand or otherwisegwliich screyv is tappedthrough an -eye,' b*' uponthe-bottom of the rest,'-'aud utter v. uponthe bedel; At or near the extremities of the bedA are bearings 'E E,which are de signed for supporting the. ends'oi the. object 'D whieh'itis required to turn-o1- grind eyliii drical. These bearings "should be iso eonstrueted that the work can be readily intrw 'du'eed into themachine and 're no'ved therefrom. .F F represent grinding wheelanrh ehaare placed on opposite 'sideso'f 'theaxis'oi the object 1) and uponhorizontal shaft d d, have their bearings-inlthe standardsoi laterally-adjustable tool-rests G G, and -which carry wheelsor drums eaground-which belts pass for communicating rotary" motion to. the

grinding-wheels, Instead of employing grind-' in g-wheels suitable.turningtheir!) arranged opposite each other, maybe substituted, or,

it desirable, a single turning-tool anda stop arranged opposite it naybe em ployed instead 7 of the grinders or the two turningrtools. The

screws G Gflwith their band'wheels are de-.

signed-for adjusting and fixing the --grindi1;ig or turning tools at anydesired distance apart; according to the required diameter of the ob;ject tobe operated upon. "These screws are supperted by-mealis .ofbearings g 9-, which" are fast upon the upper surface of a horizontaltransversesaddle', H. The saddle His hung from the upper ends of linksor armsih h-h h, a

so that it is free to swing transversely-abet. is to say, it will swingat right angles to the axis of the object D. The'four arms hare pivat'its ends by suitable bearings e e cient .space'. being left between thissaddle and v motion, it, is

' above mentioned.

were made pert ctly straight,

. et-ill i tools or grinders, this transverse motion being the-directconverse of the lateral motion pro-' -r=-' duced in the rest bed andwant of V be turned or ground. Theefl'ect of transverse the restto allowof the swinging movement 1 If-the bed A the toolstor grinding-wheelsrigidiy fixed'to an r unyielding saddle, the axis of the, object to beground perfectly parallel to the lineof motion of the rest, and themachine set in avidentthat a perfectly cyIindricalpbject could beobtainedfiB at in practice -1t is found impossible to make a straight,and, even if it were so,- the varying travel of th I the parts out oftrue.

tl'ietool-resta'jis free tomove transversely and preserve a bytheirregularities of the parallelism of theobject to' motion of the rest Bwould be to'force one tool or grinder against the work away from it, butthe saddle H, being suspendor supported in any suitable manner, so thatit is free to.move transversely,

instantly yields and moves-either to the right or the left, as the casemay be, and restores the,

equality of the pressure of the tools or grinders against the work.

It will be understood that my invention is specially designed forturning cylinders'to a uniform diameter after such cylinders haveseemingly to the eye and even under the application of .the' calipersbeen turned true; in a lathe which has but one stationary tool, or whichhas been turned thus seemingly true, in my machine he ein described, byadjusting one of the pair of tools, and hiring it and its support sothat it works singly and alone up? on the article being turned;

I am aware that it is not new to construct sides and near hand arrangeturning and nd at their 11 grind -cl1ned to the axis of v operated upon,'I also am .aware that theobbed perfectly. ject which is being wroughthas been arranged; e rest with objects of difierent' .length would soonwear I Byfmy invention it will'be seen that, while the main rest Bisforced to follow any irregularities-of the bed A, the saddle H, carryinguniform distance between the and the other contact with the surt objectatopposite points thereof, substantially I 'as'herein described.

grinding mechanis'm. tools shall simultaneously cut or oppositesurlacesof a metallic object moving between?- t em, such tools havingchance tom'ove-with one another transversely to the articlebeing'wrought during the act or grinding or turning. ;I- such fixed orrotating axes, have'been arranged so as to have imparted to them a'translatory movement in a direction either the object so that two whichis being with relation to two such tools,

so as to have a movement of translation in the direction tioni, ,But [amnot aware that two 0: more tool's,or a pair consisting of a tool andhave been arrangedso as to be free to which'is being turned or .groundduring the act of grinding and turning;

My invention doesnot consist simplyin any one'of the arrangements whichI I am but stated, that aware of, nor inany combination of them;

to secure byLetters Patent, is- An arrangement of oneor more pairs ofcut: ,ting or grinding tools, or one or more pairs composed respectivelyof a cutting or grinding tool and a rest, upon-a to move laterally ortransversely to the ob? ject which is ment and fixation thereon inrelation to one another, and dependent for their movements to and fromthe surface of the object placed between them to be turned or ground bytheir act! or surfacesof. said J. onroNroOnnL. Witnesses:

JOSEPH Harms,

WM. T. PORTER.

also'a'm aware that" grinding or'cuttin'g tools, whetheron a rest, movetogether laterally or transversely-to the object What I claim as myinventioni'and desire frame which is free being turned or gr0und,thetool s 'constituting'a pairbeing capable of adjust-

